Hey!
I'm not very active on this forum, but I just saw your post... I'm going to be living in China for a year with a few other performers (2 dancers and another juggler). We are moving to Xuzhou in August. It's a few hours north of Hangzhou, but probably close enough that we could get together at least a few times!
I don't know what the rest of the juggling scene is like in China, but hopefully we will find some once we are there.... good luck man!